Generally speaking, all the shelf life means is the last day the item can be sold. Usually, most food is good for a few days past the shelf life, with the exception of meat, which I don't have to worry about. Now, TOFU and most vegetable, have an obvious foul odor when it starts to go bad. So, just look at it amd smell it. That should usually tell you. I have used TOFU past the expiration date on occasion. If it is stored properly-in cold water changed daily, extends the life of the product signifigently.